Ozeaneum aquarium, Stralsund

The Ozeaneum, which opened in July 2008, takes you on an incredible underwater adventure through five interactive exhibitions and aquariums of the northern seas. Inside the spectacular building, you are guided through the world's largest whale exhibition – complete with life-size replicas of the ocean giants. The aquarium, which was named European Museum of the Year in 2010, also boasts the continent's biggest exhibition about the Baltic Sea and a grand total of 45 tanks.